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Lisa Dawn Hamilton, Sari M. van Anders, David N. Cox and Neil V. Watson

The association between androgens and competition in women has been understudied compared with men. The current study examined the link between testosterone (T) and competition in elite female athletes, using a sample of female wrestlers that included athletes competing at both the national and international level. In a repeated-measures design, saliva samples were collected before and after wrestling bouts, with comparable samples of wins and losses, and subsequently analyzed for T. Study results showed a 22% increase in circulating bioavailable T from pre-to postbout, F(1, 12) = 9.71, P = .009. There was no significant difference in T between win or loss outcomes. These findings—showing a link between individual head-to-head competition and T in women—demonstrate that women’s androgenic responses to environmental contexts are dynamic and may be an important factor to address in research on competitive performance.

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Anna Posbergh

By Rebecca Jordan-Young and Katrina Karkazis. Harvard University Press , 2019, Cambridge, MA. The stories most dominantly associated with testosterone are riddled with cultural folktales, rely on contentious science, and continue to remain undisputed. This postulation is what prompted critical

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David R. Hooper, William J. Kraemer, Rebecca L. Stearns, Brian R. Kupchak, Brittanie M. Volk, William H. DuPont, Carl M. Maresh and Douglas J. Casa

The presence of reduced basal concentrations of testosterone in highly aerobically trained men was first documented by Wheeler et al, 1 who wanted to discover whether endurance running in men produced similar changes in basal hormones as that noted in women. Indeed, it was observed that high

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Bruno P. Melo, Débora A. Guariglia, Rafael E. Pedro, Dennis A. Bertolini, Solange de Paula Ramos, Sidney B. Peres and Solange M. Franzói de Moraes

cortisol and increase testosterone levels, promoting a positive anabolic status and reduce the risk of inflammatory reactions over time in this population. Therefore, the aim of the present study was to verify the acute effects of combined exercise about cortisol, testosterone, immunoglobulin A (IgA), and

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Mauricio Castro-Sepulveda, Jorge Cancino, Rodrigo Fernández-Verdejo, Cristian Pérez-Luco, Sebastian Jannas-Vela, Rodrigo Ramirez-Campillo, Juan Del Coso and Hermann Zbinden-Foncea

, leading to abnormally high [Na + ] in sweat (i.e., >70 mmol/L; Del Coso et al., 2016 ). Notably, in in vitro and animal models, cortisol (C) and testosterone (T) have been reported to regulate the expression of CFTR. Cortisol downregulates CFTR expression ( Laube et al., 2015 ), whereas testosterone

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Michelle S. Rockwell, Madlyn I. Frisard, Janet W. Rankin, Jennifer S. Zabinsky, Ryan P. Mcmillan, Wen You, Kevin P. Davy and Matthew W. Hulver

beginning the study. Figure 1 —Experimental design. VITD = 5,000 IU of vitamin D 3 ; PTH = parathyroid hormone; fT = free testosterone; tT = total testosterone; SHBG = sex hormone-binding globulin; IGF-1 = insulin-like growth factor 1; DXA = dual-energy X-ray absorptiometry. Participants Male and female

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Tony Adebero, Brandon John McKinlay, Alexandros Theocharidis, Zach Root, Andrea R. Josse, Panagiota Klentrou and Bareket Falk

anabolic hormones (eg, testosterone, insulin-like growth factor 1, growth hormone). These hormones regulate metabolic processes and play an important role in protein synthesis ( 2 , 4 , 8 , 11 , 19 ). Specifically, cortisol and testosterone have been shown to play a major role in regulating protein

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Benjamin G. Serpell, Barry G. Horgan, Carmen M.E. Colomer, Byron Field, Shona L. Halson and Christian J. Cook

interesting one, especially considering cortisol and testosterone are increasingly being investigated in a sporting context as highly malleable and functionally relevant biosignals of athlete readiness. 6 Testosterone is a steroid hormone from the androgen group, which may affect mood, behavior, neuromuscular

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Blair Crewther, Christian Cook, John Fitzgerald, Michal Starczewski, Michal Gorski and Joanna Orysiak

reproductive physiology is affected by 25(OH)D, including production of sex steroid (eg, testosterone) hormones ( 2 ). This is pertinent to the study of 25(OH)D and muscle function, as testosterone contributes to neuromuscular development, contractile signaling, and behaviors that underpin physical performance

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Jenny Meggs, Mark Chen and Danielle Mounfield

There have been research developments around individual differences in biological markers of hormonal development. There are several sources of evidence to suggest that the prenatal markers of testosterone (2D4D) ratio is an indicator of fetal sex hormones such as testosterone and estrogen. The 2D4